1 /*
2 +----------------------------------------------------------------------+
3 | Zend Engine |
4 +----------------------------------------------------------------------+
5 | Copyright (c) Zend Technologies Ltd. (http://www.zend.com) |
6 +----------------------------------------------------------------------+
7 | This source file is subject to version 2.00 of the Zend license, |
8 | that is bundled with this package in the file LICENSE, and is |
9 | available through the world-wide-web at |
10 | http://www.zend.com/license/2_00.txt. |
11 | If you did not receive a copy of the Zend license and are unable to |
12 | obtain it through the world-wide-web, please send a note to |
13 | license@zend.com so we can mail you a copy immediately. |
14 +----------------------------------------------------------------------+
15 | Authors: Masaki Fujimoto <fujimoto@php.net> |
16 | Rui Hirokawa <hirokawa@php.net> |
17 +----------------------------------------------------------------------+
18 */
19
20 #include "zend.h"
21 #include "zend_compile.h"
22 #include "zend_operators.h"
23 #include "zend_multibyte.h"
24 #include "zend_ini.h"
25
dummy_encoding_fetcher(const char * encoding_name)26 static const zend_encoding *dummy_encoding_fetcher(const char *encoding_name)
27 {
28 return NULL;
29 }
30
dummy_encoding_name_getter(const zend_encoding * encoding)31 static const char *dummy_encoding_name_getter(const zend_encoding *encoding)
32 {
33 return (const char*)encoding;
34 }
35
dummy_encoding_lexer_compatibility_checker(const zend_encoding * encoding)36 static bool dummy_encoding_lexer_compatibility_checker(const zend_encoding *encoding)
37 {
38 return 0;
39 }
40
dummy_encoding_detector(const unsigned char * string,size_t length,const zend_encoding ** list,size_t list_size)41 static const zend_encoding *dummy_encoding_detector(const unsigned char *string, size_t length, const zend_encoding **list, size_t list_size)
42 {
43 return NULL;
44 }
45
dummy_encoding_converter(unsigned char ** to,size_t * to_length,const unsigned char * from,size_t from_length,const zend_encoding * encoding_to,const zend_encoding * encoding_from)46 static size_t dummy_encoding_converter(unsigned char **to, size_t *to_length, const unsigned char *from, size_t from_length, const zend_encoding *encoding_to, const zend_encoding *encoding_from)
47 {
48 return (size_t)-1;
49 }
50
dummy_encoding_list_parser(const char * encoding_list,size_t encoding_list_len,const zend_encoding *** return_list,size_t * return_size,bool persistent)51 static zend_result dummy_encoding_list_parser(const char *encoding_list, size_t encoding_list_len, const zend_encoding ***return_list, size_t *return_size, bool persistent)
52 {
53 *return_list = pemalloc(0, persistent);
54 *return_size = 0;
55 return SUCCESS;
56 }
57
dummy_internal_encoding_getter(void)58 static const zend_encoding *dummy_internal_encoding_getter(void)
59 {
60 return NULL;
61 }
62
dummy_internal_encoding_setter(const zend_encoding * encoding)63 static zend_result dummy_internal_encoding_setter(const zend_encoding *encoding)
64 {
65 return FAILURE;
66 }
67
68 static zend_multibyte_functions multibyte_functions_dummy;
69 static zend_multibyte_functions multibyte_functions = {
70 NULL,
71 dummy_encoding_fetcher,
72 dummy_encoding_name_getter,
73 dummy_encoding_lexer_compatibility_checker,
74 dummy_encoding_detector,
75 dummy_encoding_converter,
76 dummy_encoding_list_parser,
77 dummy_internal_encoding_getter,
78 dummy_internal_encoding_setter
79 };
80
81 ZEND_API const zend_encoding *zend_multibyte_encoding_utf32be = (const zend_encoding*)"UTF-32BE";
82 ZEND_API const zend_encoding *zend_multibyte_encoding_utf32le = (const zend_encoding*)"UTF-32LE";
83 ZEND_API const zend_encoding *zend_multibyte_encoding_utf16be = (const zend_encoding*)"UTF-16BE";
84 ZEND_API const zend_encoding *zend_multibyte_encoding_utf16le = (const zend_encoding*)"UTF-32LE";
85 ZEND_API const zend_encoding *zend_multibyte_encoding_utf8 = (const zend_encoding*)"UTF-8";
86
zend_multibyte_set_functions(const zend_multibyte_functions * functions)87 ZEND_API zend_result zend_multibyte_set_functions(const zend_multibyte_functions *functions)
88 {
89 zend_multibyte_encoding_utf32be = functions->encoding_fetcher("UTF-32BE");
90 if (!zend_multibyte_encoding_utf32be) {
91 return FAILURE;
92 }
93 zend_multibyte_encoding_utf32le = functions->encoding_fetcher("UTF-32LE");
94 if (!zend_multibyte_encoding_utf32le) {
95 return FAILURE;
96 }
97 zend_multibyte_encoding_utf16be = functions->encoding_fetcher("UTF-16BE");
98 if (!zend_multibyte_encoding_utf16be) {
99 return FAILURE;
100 }
101 zend_multibyte_encoding_utf16le = functions->encoding_fetcher("UTF-16LE");
102 if (!zend_multibyte_encoding_utf16le) {
103 return FAILURE;
104 }
105 zend_multibyte_encoding_utf8 = functions->encoding_fetcher("UTF-8");
106 if (!zend_multibyte_encoding_utf8) {
107 return FAILURE;
108 }
109
110 multibyte_functions_dummy = multibyte_functions;
111 multibyte_functions = *functions;
112
113 /* As zend_multibyte_set_functions() gets called after ini settings were
114 * populated, we need to reinitialize script_encoding here.
115 */
116 {
117 const char *value = zend_ini_string("zend.script_encoding", sizeof("zend.script_encoding") - 1, 0);
118 zend_multibyte_set_script_encoding_by_string(value, strlen(value));
119 }
120 return SUCCESS;
121 }
122
zend_multibyte_restore_functions(void)123 ZEND_API void zend_multibyte_restore_functions(void)
124 {
125 multibyte_functions = multibyte_functions_dummy;
126 }
127
zend_multibyte_get_functions(void)128 ZEND_API const zend_multibyte_functions *zend_multibyte_get_functions(void)
129 {
130 return multibyte_functions.provider_name ? &multibyte_functions: NULL;
131 }
132
zend_multibyte_fetch_encoding(const char * name)133 ZEND_API const zend_encoding *zend_multibyte_fetch_encoding(const char *name)
134 {
135 return multibyte_functions.encoding_fetcher(name);
136 }
137
zend_multibyte_get_encoding_name(const zend_encoding * encoding)138 ZEND_API const char *zend_multibyte_get_encoding_name(const zend_encoding *encoding)
139 {
140 return multibyte_functions.encoding_name_getter(encoding);
141 }
142
zend_multibyte_check_lexer_compatibility(const zend_encoding * encoding)143 ZEND_API int zend_multibyte_check_lexer_compatibility(const zend_encoding *encoding)
144 {
145 return multibyte_functions.lexer_compatibility_checker(encoding);
146 }
147
zend_multibyte_encoding_detector(const unsigned char * string,size_t length,const zend_encoding ** list,size_t list_size)148 ZEND_API const zend_encoding *zend_multibyte_encoding_detector(const unsigned char *string, size_t length, const zend_encoding **list, size_t list_size)
149 {
150 return multibyte_functions.encoding_detector(string, length, list, list_size);
151 }
152
zend_multibyte_encoding_converter(unsigned char ** to,size_t * to_length,const unsigned char * from,size_t from_length,const zend_encoding * encoding_to,const zend_encoding * encoding_from)153 ZEND_API size_t zend_multibyte_encoding_converter(unsigned char **to, size_t *to_length, const unsigned char *from, size_t from_length, const zend_encoding *encoding_to, const zend_encoding *encoding_from)
154 {
155 return multibyte_functions.encoding_converter(to, to_length, from, from_length, encoding_to, encoding_from);
156 }
157
zend_multibyte_parse_encoding_list(const char * encoding_list,size_t encoding_list_len,const zend_encoding *** return_list,size_t * return_size,bool persistent)158 ZEND_API zend_result zend_multibyte_parse_encoding_list(const char *encoding_list, size_t encoding_list_len, const zend_encoding ***return_list, size_t *return_size, bool persistent)
159 {
160 return multibyte_functions.encoding_list_parser(encoding_list, encoding_list_len, return_list, return_size, persistent);
161 }
162
zend_multibyte_get_internal_encoding(void)163 ZEND_API const zend_encoding *zend_multibyte_get_internal_encoding(void)
164 {
165 return multibyte_functions.internal_encoding_getter();
166 }
167
zend_multibyte_get_script_encoding(void)168 ZEND_API const zend_encoding *zend_multibyte_get_script_encoding(void)
169 {
170 return LANG_SCNG(script_encoding);
171 }
172
zend_multibyte_set_script_encoding(const zend_encoding ** encoding_list,size_t encoding_list_size)173 ZEND_API zend_result zend_multibyte_set_script_encoding(const zend_encoding **encoding_list, size_t encoding_list_size)
174 {
175 if (CG(script_encoding_list)) {
176 free((char*)CG(script_encoding_list));
177 }
178 CG(script_encoding_list) = encoding_list;
179 CG(script_encoding_list_size) = encoding_list_size;
180 return SUCCESS;
181 }
182
zend_multibyte_set_internal_encoding(const zend_encoding * encoding)183 ZEND_API zend_result zend_multibyte_set_internal_encoding(const zend_encoding *encoding)
184 {
185 return multibyte_functions.internal_encoding_setter(encoding);
186 }
187
zend_multibyte_set_script_encoding_by_string(const char * new_value,size_t new_value_length)188 ZEND_API zend_result zend_multibyte_set_script_encoding_by_string(const char *new_value, size_t new_value_length)
189 {
190 const zend_encoding **list = 0;
191 size_t size = 0;
192
193 if (!new_value) {
194 zend_multibyte_set_script_encoding(NULL, 0);
195 return SUCCESS;
196 }
197
198 if (FAILURE == zend_multibyte_parse_encoding_list(new_value, new_value_length, &list, &size, 1)) {
199 return FAILURE;
200 }
201
202 if (size == 0) {
203 pefree((void*)list, 1);
204 return FAILURE;
205 }
206
207 if (FAILURE == zend_multibyte_set_script_encoding(list, size)) {
208 return FAILURE;
209 }
210
211 return SUCCESS;
212 }
213
